(A) has a partial double bond character (B) is stable in strong acids (C) occurs most commonly in cis configuration (D) is cleaved by agents that denature proteins, such as organic solvents and high concentrations of urea.

88. If you want literature information, which is the best website to visit?

(A) OMIM (B) Entrez (C) PubMed (D) PROSITE

89. The complete denaturation of a protein leads to a loss of the following structure(s):